/* 这是CSS样式表注释 */
body {
  background-color: #F5F5F7;
  background: linear-gradient(to right, #f6f1d3, #648880, #293f50);
  /* background-image: url('https://img-prod-cms-rt-microsoft-com.akamaized.net/cms/api/am/imageFileData/RE4wHgp?ver=1605'); */
}
h1 {
  text-align: center;
  font-family: "黑体",serif;
  font-size: 3em;
  text-shadow: red 0 1px 0;
}
p {
  text-indent: 2em;
  text-decoration:underline;
  font-weight: bold;
  color:red;
}
body:lang(zh-CN) {
  font-family: SF Pro SC,SF Pro Text,SF Pro Icons,PingFang SC,Helvetica Neue,Helvetica,Arial,sans-serif;
  font-family: -apple-system,SF UI Text,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,WenQuanYi Micro Hei,sans-serif;
}
.demo {
  width: 200px;
  height: 200px;
  background-color:#F5F5F7;
  border: 1px red solid;
  border-radius: 5px;

  /* margin-top: 1em;
  margin-left: 2em; */
  margin: 1em;
  padding: 1em;
}
